do not die if stat(2) fails in build.pl
save tempfiles generated in t/009.self-hosting.t
allow a void expression at the place of a return value
add tests
no longer able to expect the tail statement to be a return statement or an expression statement when inlining because of returns-void-expression patch
amend prev commit
rename the flag to swich expression transformation
Merge pull request #248 from jsx/wasabiz/returns-void-expression

void expression in return statement
cosmetic changes
use localvar's name instead of expr's token
change the option in make test-transformed-optimized: must not disable runtime-type-check and etc
Merge remote-tracking branch 'origin/master' into refactor-transformer
fix a bug in a test case t/run/178
Merge branch 'master' into refactor-transformer