Adding support for schemas and multiple tables, Attempt to fix issue 178

[cvvergara]

Support for schemas and multiple tables:
Modifications to: pgr_analyzeGraph (non sql version) pgr_analizeOneway pgr_createTopology
pgr_pointToId pgr_isColumnInTable pgr_isColumnIndexed
New fucntions: pgr_createVerticesTable
pgr_getTableName pgr_getColumnName

In some functions parameters were added to handle different names for "source" and "target"
Example: The vertices table created for table myschema,myedgetable is
myschema.myedgetable_vertices_pgr

[woodbri]

looking this over, it seems that src/common/test/common-any-05.test is not correct because it ends in select * from vertices_tmp order by id; and this table does not exist. What should this table be named with the new code?