Added FSHELL_[NO_]ARMCC_DIAG_SUPPRESS_SUPPORT.
The versions of RVCT that I'm using (2.2 build 616 and 2.2 build 686) don't appear to support --diag-supress.
# Package Information for pkg-config
prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@
Name: libpcre
Description: PCRE - Perl compatible regular expressions C library
Version: @PACKAGE_VERSION@
Libs: -L${libdir} -lpcre
Cflags: -I${includedir}