* src/SDCCpeeph.c (peepHole): Fixed all leaks. Added trace support for freeing...

	* src/SDCCpeeph.c (peepHole): Fixed all leaks.  Added trace support for freeing lines.  Optimised restart logic to re-run instead of restart.  Now compiles dscan.c on ~60MB instead of ~200MB.

	* support/Util/NewAlloc.c: Added ability to use libgc instead of malloc.  Added Safe_free and Safe_strdup.  Added trace support where you can log allocations and free all at once.

	* src/z80/gen.c (genZ80Code): Added de-allocation via trace support.

	* src/pic/gen.c: Removed Safe_strdup.

	* configure.in: Added option to enable libgc support.

	* src/SDCCbitv.c (bitVectnBitsOn): Optimised.
	(bitVectUnion): Optimised.
	(bitVectIntersect): Optimised.
	(bitVectBitsInCommon): Optimised.
	(bitVectCplAnd): Optimised.

	* support/makebin/makebin.c (usage): Removed getopt as mingw32 doesn't have it.  Sigh.

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@1362 4a8a32a2-be11-0410-ad9d-d568d2c75423