Fix accidental type conversion in sluggable behavior.

This generated code:

    $slugNum = substr($object->getAccountId(), strlen($slug) + 1);
    if (0 == $slugNum[0]) {
        $slugNum[0] = 1;
    }

    return $slug2 . ($slugNum + 1);

will turn `$slugNum` into an array if substr returns false. By checking
with `===` against `'0'`, this is avoided.
PropelObjectCollection::getIdenticalObject optimalization
code style fix
use datasource connection(buildtime-conf.xml) instead of globals (build.properties) while performing datadump task
fix for CASE expression in query with offset in ms sql
test added
add missing import for nested set

add import for the NestedSetRecursiveIterator
Added case-insensitive check for the version column
Added test for version column case insensitivity
Get TableMap class name from Peer class

I think it is a bad idea to generate the TableMap name on demand in the
DatabaseMap. Instead it would be a good idea to read it from the Peer
class. In that case it is possible to change the TableMap class name
completely by overwritting the builder
Fix namespace support

The constant TM_CLASS was not containing the fully qualified classname.
Needed for the DatabaseMap class to detect the name correctly
Merge pull request #708 from lbarulski/patch-1

PropelObjectCollection::getIdenticalObject optimalization
Merge pull request #739 from project-a/master

Get TableMap class name from Peer class instead of concatenating
Merge pull request #738 from iainmckay/versionable-caseinsensitive-column

Added case-insensitive check for the version column
Merge pull request #712 from loicbourg/fix-nestedset

add missing import for nested set
Merge pull request #711 from lars-fomin/mssql

fix for CASE expression in query with offset in ms sql
[README] Add packagist badge to show project popularity
Fixed diff task combined with skipSql

Do not compare modified or renamed tables with skipSql option.
Merge pull request #761 from nicolas-bastien/patch-1

[README] Add packagist badge to show project popularity
fixed a getter function without '$con'