Make DO binary treat the binary as source

LOAD and IMPORT treat binary data as UTF-8 source. So should DO.

Also, fixes an outdated comment.
FIND-ALL speed optimization

Requested by Ladislav in http://issue.cc/r3/2005
Suppress compiler warnings.
Delete REBDCL type definition (no longer used in code).
Based on mul64 since it updates reb-c.h
Get rid of INT_64_MODE (the code is not consistent with its opposite anyway)
Use C99 integer definitions where available
Use typedef long i32 for non-C99 and non LP64 compilers
Merge pull request #82 from BrianHawley/fix-1952-do-binary

Make DO binary treat the binary as source
Merge pull request #139 from ladislav/clone#1863

Correct multiple inheritance, CC#1863  (please verify the result as it relates to #143 - thanks.)
Merge pull request #180 from earl/fix-unwind-passing

Fix unwind passing (CureCode issues 1509, 1515, 1519, 1760)
Merge pull request #183 from BrianHawley/wish-2005-find-all-speedup

FIND-ALL speed optimization
Merge pull request #147 from ladislav/compiler-warnings

Suppress compiler warnings. Accepted, but with the comment posted to this change, that should anyone have a problem compiling Rebol core for some odd platform, that we find a fix.
Merge mainline into community

Conflicts:
	src/core/f-math.c
	src/core/n-control.c
	src/include/reb-c.h