Added the ability to specify default chips with a board.

    * config/arm/boards/stm32f0discovery/board.cfg: If there is no chip
        specified on the command line, select the stm32f051
    * config/arm/boards/stm32vldiscovery/board.cfg: If there is no chip
        specified on the command line, select the stm32f100
    * configure: Regenerated
    * configure.ac: Reordered the sourcing of the various cfg files,
        since this needs to happen before variables are substituted
        (board.cfg could modify $chip)
Saving the CFLAGS and LDFLAGS seems unnecessary.

    * Makefile.in: Regenerated
    * configure: Regenerated
    * configure.ac: Removed the saving of CFLAGS and LDFLAGS. This
        removes the need for CONFIG_CFLAGS and CONFIG_LDFLAGS
    * src/2dfir/Makefile.in: Regenerated
    * src/adpcm/Makefile.in: Regenerated
    * src/blowfish/Makefile.in: Regenerated
    * src/bs/Makefile.in: Regenerated
    * src/bsort100/Makefile.in: Regenerated
    * src/bubblesort/Makefile.in: Regenerated
    * src/cnt/Makefile.in: Regenerated
    * src/common.mk.am: Removed CONFIG_CFLAGS and CONFIG_LDFLAGS usages
    * src/compress/Makefile.in: Regenerated
    * src/cover/Makefile.in: Regenerated
    * src/crc/Makefile.in: Regenerated
    * src/crc32/Makefile.in: Regenerated
    * src/ctl-stack/Makefile.in: Regenerated
    * src/ctl-string/Makefile.in: Regenerated
    * src/ctl-vector/Makefile.in: Regenerated
    * src/cubic/Makefile.in: Regenerated
    * src/dhrystone/Makefile.in: Regenerated
    * src/dijkstra/Makefile.in: Regenerated
    * src/dtoa/Makefile.in: Regenerated
    * src/duff/Makefile.in: Regenerated
    * src/edn/Makefile.in: Regenerated
    * src/expint/Makefile.in: Regenerated
    * src/fac/Makefile.in: Regenerated
    * src/fasta/Makefile.in: Regenerated
    * src/fdct/Makefile.in: Regenerated
    * src/fft/Makefile.in: Regenerated
    * src/fibcall/Makefile.in: Regenerated
    * src/fir/Makefile.in: Regenerated
    * src/float_matmult/Makefile.in: Regenerated
    * src/frac/Makefile.in: Regenerated
    * src/gdb-advance/Makefile.in: Regenerated
    * src/gdb-all-types/Makefile.in: Regenerated
    * src/gdb-anon/Makefile.in: Regenerated
    * src/gdb-arrayidx/Makefile.in: Regenerated
    * src/gdb-async/Makefile.in: Regenerated
    * src/gdb-bitfields/Makefile.in: Regenerated
    * src/gdb-constvars/Makefile.in: Regenerated
    * src/gdb-store/Makefile.in: Regenerated
    * src/huffbench/Makefile.in: Regenerated
    * src/insertsort/Makefile.in: Regenerated
    * src/int_matmult/Makefile.in: Regenerated
    * src/janne_complex/Makefile.in: Regenerated
    * src/jfdctint/Makefile.in: Regenerated
    * src/lcdnum/Makefile.in: Regenerated
    * src/levenshtein/Makefile.in: Regenerated
    * src/lms/Makefile.in: Regenerated
    * src/ludcmp/Makefile.in: Regenerated
    * src/mergesort/Makefile.in: Regenerated
    * src/miniz/Makefile.in: Regenerated
    * src/minver/Makefile.in: Regenerated
    * src/nbody/Makefile.in: Regenerated
    * src/ndes/Makefile.in: Regenerated
    * src/nettle-arcfour/Makefile.in: Regenerated
    * src/nettle-cast128/Makefile.in: Regenerated
    * src/nettle-des/Makefile.in: Regenerated
    * src/nettle-md5/Makefile.in: Regenerated
    * src/newlib-exp/Makefile.in: Regenerated
    * src/newlib-log/Makefile.in: Regenerated
    * src/newlib-mod/Makefile.in: Regenerated
    * src/newlib-sqrt/Makefile.in: Regenerated
    * src/ns/Makefile.in: Regenerated
    * src/nsichneu/Makefile.in: Regenerated
    * src/prime/Makefile.in: Regenerated
    * src/qsort/Makefile.in: Regenerated
    * src/qurt/Makefile.in: Regenerated
    * src/recursion/Makefile.in: Regenerated
    * src/rijndael/Makefile.in: Regenerated
    * src/select/Makefile.in: Regenerated
    * src/sglib-arraybinsearch/Makefile.in: Regenerated
    * src/sglib-arraysort/Makefile.in: Regenerated
    * src/sglib-arraysort1/Makefile.in: Regenerated
    * src/sglib-dllist/Makefile.in: Regenerated
    * src/sglib-hashtable/Makefile.in: Regenerated
    * src/sglib-listinsertsort/Makefile.in: Regenerated
    * src/sglib-listinsertsort1/Makefile.in: Regenerated
    * src/sglib-listsort/Makefile.in: Regenerated
    * src/sglib-queue/Makefile.in: Regenerated
    * src/sglib-rbtree/Makefile.in: Regenerated
    * src/sha/Makefile.in: Regenerated
    * src/slre/Makefile.in: Regenerated
    * src/sqrt/Makefile.in: Regenerated
    * src/st/Makefile.in: Regenerated
    * src/statemate/Makefile.in: Regenerated
    * src/stringsearch1/Makefile.in: Regenerated
    * src/strstr/Makefile.in: Regenerated
    * src/tarai/Makefile.in: Regenerated
    * src/template/Makefile.in: Regenerated
    * src/ud/Makefile.in: Regenerated
    * src/whetstone/Makefile.in: Regenerated
    * src/wikisort/Makefile.in: Regenerated