Removed arguments from testsuite not supported by clang

flags removed:

-fabi-version=1
-falign-labels=8
-fallow-parameterless-variadic-functions
-fcheck-data-deps
-fcompare-debug
-fcond-mismatch
-fcrossjumping
-fcse-follow-jumps
-fcx-fortran-rules
-fcx-limited-range
-fdelete-null-pointer-checks
-fdiagnostics-show-caret
-fdirectives-only
-fdisable-ipa-inline
-fdisable-tree-cunroll
-fdisable-tree-cunroll=foo
-fdisable-tree-cunrolli
-fdisable-tree-cunrolli=foo
-fdisable-tree-einline
-fdisable-tree-einline=0:100
-fdisable-tree-einline=foo2
-fdisable-tree-einline=foo,foo2
-fdump-ada-spec
-fdump-ipa-all
-fdump-ipa-cgraph
-fdump-ipa-cp
-fdump-ipa-cp-details
-fdump-ipa-early_local_cleanups
-fdump-ipa-inline
-fdump-ipa-inline-details
-fdump-ipa-profile_estimate-blocks-details
-fdump-ipa-pta
-fdump-ipa-pta-details
-fdump-ipa-pure-const
-fdump-noaddr
-fdump-passes
-fdump-rtl-all
-fdump-rtl-all-graph
-fdump-rtl-bbro
-fdump-rtl-combine
-fdump-rtl-cse1
-fdump-rtl-dse1
-fdump-rtl-expand
-fdump-rtl-expand-details
-fdump-rtl-final
-fdump-rtl-hoist
-fdump-rtl-ira
-fdump-rtl-loop2_unroll
-fdump-rtl-loop2_unroll=stderr
-fdump-rtl-postreload-graph
-fdump-rtl-sched2
-fdump-rtl-shorten
-fdump-rtl-sms
-fdump-rtl-subreg1
-fdump-rtl-web
-fdump-tree-alias
-fdump-tree-alias-details
-fdump-tree-alias-vops
-fdump-tree-all
-fdump-tree-ccp1
-fdump-tree-ccp1-details
-fdump-tree-ccp2
-fdump-tree-cdce-details
-fdump-tree-cddce1
-fdump-tree-cddce2
-fdump-tree-cddce2-details
-fdump-tree-cfg
-fdump-tree-ch
-fdump-tree-ch-details
-fdump-tree-copyprop1
-fdump-tree-cselim
-fdump-tree-cselim-details
-fdump-tree-cunroll-details
-fdump-tree-cunrolli-details
-fdump-tree-dce1
-fdump-tree-dce2
-fdump-tree-dom1
-fdump-tree-dom1-details
-fdump-tree-dom1-stats
-fdump-tree-dom2
-fdump-tree-dom2-details
-fdump-tree-dse
-fdump-tree-dse1
-fdump-tree-dse1-details
-fdump-tree-dse1-vops
-fdump-tree-dse-details
-fdump-tree-ealias
-fdump-tree-ealias-details
-fdump-tree-einline
-fdump-tree-eipa_sra-details
-fdump-tree-esra
-fdump-tree-esra-details
-fdump-tree-fab1
-fdump-tree-fnsplit
-fdump-tree-forwprop
-fdump-tree-forwprop1
-fdump-tree-forwprop1-details
-fdump-tree-forwprop2
-fdump-tree-fre1
-fdump-tree-fre1-details
-fdump-tree-fre1-stats
-fdump-tree-fre2
-fdump-tree-fre2-details
-fdump-tree-gimple
-fdump-tree-gimple-details-lineno
-fdump-tree-ifcombine
-fdump-tree-ifcvt-details
-fdump-tree-ifcvt-stats
-fdump-tree-isolate-paths
-fdump-tree-ivcanon-details
-fdump-tree-ivopts
-fdump-tree-ivopts-details
-fdump-tree-ldist-all
-fdump-tree-ldist-details
-fdump-tree-lim1
-fdump-tree-lim1-details
-fdump-tree-local-pure-const1
-fdump-tree-mergephi1
-fdump-tree-mergephi2
-fdump-tree-objsz1-details
-fdump-tree-ompexp
-fdump-tree-omplower
-fdump-tree-optimized
-fdump-tree-optimized-blocks
-fdump-tree-optimized-blocks-details
-fdump-tree-optimized-lineno
-fdump-tree-optimized-nouid
-fdump-tree-optimized-raw
-fdump-tree-optimized-slim
-fdump-tree-original
-fdump-tree-parloops-details
-fdump-tree-pcom-details
-fdump-tree-phicprop1
-fdump-tree-phiopt1
-fdump-tree-phiopt1-details
-fdump-tree-phiprop-details
-fdump-tree-pre
-fdump-tree-pre-all
-fdump-tree-pre-details
-fdump-tree-pre-stats
-fdump-tree-profile_estimate
-fdump-tree-profile_estimate-details
-fdump-tree-reassoc1
-fdump-tree-reassoc1-details
-fdump-tree-reassoc-details
-fdump-tree-recip
-fdump-tree-release_ssa
-fdump-tree-sccp-details
-fdump-tree-sccp-scev
-fdump-tree-sink
-fdump-tree-sink-stats
-fdump-tree-slsr
-fdump-tree-slsr-details
-fdump-tree-ssa
-fdump-tree-ssa-vops
-fdump-tree-stdarg
-fdump-tree-strlen
-fdump-tree-switchconv
-fdump-tree-switchconv-all
-fdump-tree-tailc
-fdump-tree-tailc-details
-fdump-tree-tailr1-details
-fdump-tree-unswitch-blocks
-fdump-tree-unswitch-details
-fdump-tree-vect-details
-fdump-tree-vrp1
-fdump-tree-vrp1-blocks-vops-details
-fdump-tree-vrp1-details
-fdump-tree-vrp1-nouid
-fdump-tree-vrp1-stats
-fdump-tree-vrp2
-fdump-tree-vrp2-details
-fdump-tree-widening_mul
-feliminate-dwarf2-dups
-femit-struct-debug-baseonly
-femit-struct-debug-detailed=any
-femit-struct-debug-detailed=none
-femit-struct-debug-detailed=sys
-femit-struct-debug-reduced
-fenable-rtl-loop2
-fenable-rtl-loop2_unroll
-fenable-rtl-loop2_unroll=foo
-fenable-rtl-loop2_unroll=foo2
-ffat-lto-objects
-fgcse-after-reload
-fgcse-las
-fgcse-sm
-fgnu-tm
-fgraphite
-fguess-branch-probability
-fhoist-adjacent-loads
-findirect-inlining
-finline-small-functions
-finstrument-functions-exclude-file-list=instrument-3
-finstrument-functions-exclude-function-list=fn
-fipa-cp
-fipa-cp-clone
-fipa-pta
-fipa-pure-const
-fipa-sra
-fipa-struct-reorg
-fira-algorithm=priority
-fisolate-erroneous-paths-attribute
-fleading-underscore
-flive-range-shrinkage
-flto-partition=1to1
-flto-partition=none
-fmodulo-sched
-fmodulo-sched-allow-regmoves
-fmove-loop-invariants
-fno-abi-version=1
-fno-crossjumping
-fno-dce
-fno-delete-null-pointer-checks
-fno-dse
-fno-early-inlining
-fno-foobar
-fno-forward-propagate
-fno-guess-branch-probability
-fno-inline-atomics
-fno-ipa-cp
-fno-ipa-pure-const
-fno-ipa-sra
-fno-ira-share-save-slots
-fno-ira-share-spill-slots
-fno-isolate-erroneous-paths-dereference
-fno-lto-compression-level=1
-fno-merge-debug-strings
-fno-move-loop-invariants
-fno-openmp
-fno-partial-inlining
-fno-peel-loops
-fno-rename-registers
-fno-strict-volatile-bitfields
-fno-toplevel-reorder
-fno-tree-ccp
-fno-tree-ch
-fno-tree-copy-prop
-fno-tree-copyrename
-fno-tree-cselim
-fno-tree-dce
-fno-tree-dominator-opts
-fno-tree-dse
-fno-tree-forwprop
-fno-tree-fre
-fno-tree-loop-distribute-patterns
-fno-tree-loop-im
-fno-tree-loop-optimize
-fno-tree-parallelize-loops=1
-fno-tree-pre
-fno-tree-pta
-fno-tree-reassoc
-fno-tree-scev-cprop
-fno-tree-sra
-fno-tree-switch-conversion
-fno-tree-tail-merge
-fno-tree-ter
-fno-tree-vrp
-fno-vect-cost-model
-fno-web
-fopenmp-simd
-fopt-info
-fpeel-loops
-fplan9-extensions
-fplugin-arg-selfassign-disable
-fplugin=./finish_unit_plugin.so
-fplugin=foo
-fplugin=./ggcplug.so
-fplugin=./one_time_plugin.so
-fplugin=./selfassign.so
-fplugin=./start_unit_plugin.so
-fpredictive-commoning
-fpreprocessed
-free
-frename-registers
-freorder-blocks-and-partition
-frerun-cse-after-loop
-fsched2-use-superblocks
-fsched-pressure
-fsched-stalled-insns=0
-fschedule-insns2
-fselective-scheduling
-fshort-double
-fsingle-precision-constant
-fsplit-wide-types
-fstack-check=generic
-fstack-check=specific
-fstack-limit
-fstack-usage
-fstrict-volatile-bitfields
-ftrack-macro-expansion
-ftrack-macro-expansion=0
-ftrack-macro-expansion=1
-ftrack-macro-expansion=2
-ftree-cselim
-ftree-dce
-ftree-dominator-opts
-ftree-loop-distribute-patterns
-ftree-loop-distribution
-ftree-loop-if-convert
-ftree-loop-if-convert-stores
-ftree-loop-ivcanon
-ftree-parallelize-loops=2
-ftree-parallelize-loops=4
-ftree-partial-pre
-ftree-pre
-ftree-tail-merge
-ftree-ter
-ftree-vrp
-funroll-loops-all
-funsafe-loop-optimizations
-fuse-linker-plugin
-fvariable-expansion-in-unroller
-fvar-tracking
-fvar-tracking-assignments
-fvect-cost-model=dynamic
-fwhole-program
-gdwarf
-mno-foobar
-tfoo