Merge pull request #100 from sunyc/master

Reinstating rusage efun.
Merge pull request #102 from sunyc/master

Adding missing detection for PCRE.
Merge pull request #103 from sunyc/master

Fix ltrim bug (zolider), adding more test cases. …
Defer Reverse
Merge pull request #105 from zoilder/Defer_Reverse

REVERSE_DEFER, fifo execution for defer()
Merge pull request #106 from sunyc/master

Fix broken get_usec_clock (time_expression).
Merge pull request #107 from sunyc/master

Rewrite unique_mapping , fix the annoying memory leak.
format source.
Source formating.
Release fluffos-3.0-alpha5