[libvirt] [PATCHv2 00/10] Begin to replace scanf and atoi

This set of patches is a first step towards removing the scanf and atoi usage in libvirt. I began with the simple cases and post this now to get some feedback before I start to convert the more difficult cases. Changes in v2: - don't test tmp for NULL - note in commit message if parsing is stricter now - don't leak in PRUnicharToInt (vbox) - strip a trailing \n in openvzGetVPSUUID, as it was done before - don't use strspn to skip whitespaces, virStrToLong* does this already - fix virStrToLong* return value tests to check for < 0 instead of < 3 or != 1 - add STRSKIP to skip a given prefix of a string Thanks to Eric Blake and Jim Meyering. Matthias