Add basic tests for apr_proc_create() for Windows batch files. #642

Job	Run time
Default	4m 34s
Default x86	5m 25s
Use Expat	1m 24s
Use Libxml2	5m 42s
Use XmlLite	9m 8s
Shared (no DSO)	4m 3s
Minimal	4m 19s
Shared: All (ODBC + Sqlite3 + PostgreSQL + Crypto + Iconv)	21m 27s
Static: All (ODBC + Sqlite3 + PostgreSQL + Crypto + Iconv)	19m 36s
	1h 15m 38s

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