Squashed 'Core/CppMicroServices/' changes from 100cffb..2a5abcb

2a5abcb Fixed OR operator for LDAP expressions.
70acf9e Added support for NULL values in LDAP expressions.
01a4608 Disable warning 4503 (decorated name length exceeded).

git-subtree-dir: Core/CppMicroServices
git-subtree-split: 2a5abcb34ed09599031a39f079e57515d3f23022