Import R-3.0.2
Merge the deletions from R-3.0.2 too
Merge branch 'vendor'

Note: Due to changes in R-3.0.2 which make it impossible to disable
bytecode interpretation during the initial startup phase, bytecode is
now disabled by default until the trace.gz parser can grok it.

Conflicts:
	configure
	src/main/coerce.c
	src/main/envir.c
	src/main/eval.c
	src/main/gram.c
	src/main/objects.c