Tagging the 1.8.0 release

git-svn-id: svn+ssh://svn.code.sf.net/p/opensips/svn/tags/1.8.0@8837 689a6050-402a-0410-94f2-e92a70836424
packaging/fedora: Improve packaging for Fedora/RHEL and derivatives
 - closes bug id: 3535148
 - backport from trunk rev 9114
 - backport from trunk rev 9115
backport from trunk (rev #9099)

removed call to ns_get16 glibc private function
Credits to Peter Lemenkov
Backported from trunk (rev# 9121):
Fixed NICER variable
db_oracle: typo fixes
 - closes bug id: 3535168
 - backport from trunk rev 9116
Drop rpath from Oracle's module

Signed-off-by: Peter Lemenkov <lemenkov@gmail.com>
Clean Makefile for Oracle

Signed-off-by: Peter Lemenkov <lemenkov@gmail.com>
Don't fetch the last record - use next one
Fix SQL types
Reset column types to NULL upon freeing resultset columns
Credit to Peter Lemenkov
fixed DB type inconsistency
Credits to Peter Lemenkov
Proper memory zeroing
Free columns data only in Oracle
Removed all async Oracle operations - they didn't work well anyway