B-C-1.26 - Perl compiler

Changes for version 1.26 - 2010-07-26

Start of 5.14 support, CVs broken.
C.pm: improve -fav-init performance if not usemymalloc: no calloc, just direct libc malloc. -O2 uses -fav-init2, i.e. experimental independent_comalloc(), -O1 uses now -fav-init (Nick Koston + Reini Urban) Mark a package which is autoloaded from XS. Fix autoloading of constants AKA const xsubcv via AUTOLOAD [test 27] (Nick Koston) 5.13.3 support (xpv STASH, MAGIC, ... reorganization), but CVs still failing Check CVv_ANON when setting cv->GV. Fixes anon subs. Do not call REGEXP IVX and NVX methods (since 5.11)
bytecode.pl: CvGv_set since 5.13.3 Fixed byteorder 0x stripping causing wrong bget_swab on 64bit
B::C::Flags: new. added by Makefile.PL probing independent_comalloc()
CC.pm: the default -fno-slow-signals adds PERL_ASYNC_CHECK at the same ops as with 5.13, a major improvement.
Bytecode.pm (1.07), bytecode.pl: xpvav.xiv_u was removed with 5.13.2 but not used anymore. read and set av_flags only until 5.12, compile only before 5.10 Check CVv_ANON when setting cv->GV. Fixes anon subs
bytecode.h: do not PM_SETRE with empty arg. fails since 5.13 debugging
t/testc.sh, t/TESTS: fail test 44, change threads tests 41-43 to TODO
perlcc (2.07), cc_harness, t/test.pl: debian specific fixes for their broken -lperl linker args for ExtUtils::Embed::ldopts.
t/test.pl: Have complete c/cc TODO/SKIP status in one place. Fixed killing hangling tests with IPC::Run. Fixed new cc TODO. Run CC test 18 even not as AUTHOR
t/c*.t: make test 27 easier to debug (Nick Koston) Added test 45 (Nick Koston)