update library (zk, c3p0)

some version as 7.0.6 of zk don't has release version for CE.
but build nightly build for stable branch is safe to update.
this patch update to nightly build 7.0.7.FL.20151022. it match with commit https://github.com/zkoss/zk/commit/dfd6293facccd090e240b573212834eee4d8261f

+ update zk, zul, zhtml, zkplus, zkbind, zcommon, zel, zweb to 7.0.7.FL.20151022
+ update ckez 4.3.3.0 => 4.4.6.2, calendar 2.1.4 => 2.1.5
+ remove version info in jar file. it let next time easy to update
+ update c3p0-0.9.5 pre9 to c3p0-0.9.5.1