stdlib: Make memcheck in ets_SUITE less sensitive
Do not use -mdynamic-no-pic on Darwin

Latest OS X versions ignore this flag as non PIC objects are
discouraged.
Properly mark Uint literals as unsigned in big.c
Properly declare _sigaction on Darwin
Define matherr only on platforms where it is used
Fix two deprecation warnings in com.ericsson.otp.ic.Environment
Fix a shift/reduce conflicts warning in icparse
Fix some sign warnings found with Clang
Fix unmatched_returns warnings in STDLIB and Kernel
Fix unmatched_return warnings in stdlib
Fix unmatched_return warning in erl_prim_loader
Fix unmatched_return warnings in kernel
Fix unmatched_return warnings in sasl
Fix unmatched_returns warning in Kernel

If the file given by the Kernel application variable 'error_logger'
cannot be opened a crash will occur.
Fix a minor bug in ets:tabfile_info() and ets:file2tab()

Certain error conditions could leave an open file descriptor.
Fix unmatched_returns warnings in Kernel
Merge branch 'hb/unmatched_returns/OTP-10908'

* hb/unmatched_returns/OTP-10908:
  Fix unmatched_returns warnings in Kernel
  Fix a minor bug in ets:tabfile_info() and ets:file2tab()
  Fix unmatched_returns warning in Kernel
  Fix unmatched_return warnings in sasl
  Fix unmatched_return warnings in kernel
  Fix unmatched_return warning in erl_prim_loader
  Fix unmatched_return warnings in stdlib
  Fix unmatched_returns warnings in STDLIB and Kernel
Update primary bootstrap
Update preloaded files
Merge branch 'sverk/ets-test-cuddle' into maint

* sverk/ets-test-cuddle:
  stdlib: Make memcheck in ets_SUITE less sensitive