Fix library detection for MYSQL,POSTGRESQL,SQLITE3.

Fix library detection for PACAKGE_CRYPTO.
Adding missing autogen.sh
Update changelogs.
Update travis test config.
Merge pull request #99 from sunyc/master

More compile fix with dependency detection.
Reinstating rusage efun.
Merge pull request #100 from sunyc/master

Reinstating rusage efun.
Adding missing detection for PCRE.
Update travis config.
Merge pull request #102 from sunyc/master

Adding missing detection for PCRE.
Fix ltrim bug (zolider), adding more test cases.

Also noted that 2nd argument to trim is a set.
Merge pull request #103 from sunyc/master

Fix ltrim bug (zolider), adding more test cases. …
Reverse Defer