prs: use the PRServer to replace the BB_URI_LOCALCOUNT functionality

- adapt the PRServer to generate an incremental number for every revision set
associated with a (PN, PV)
- use one incrementing value rather than several
- PV becomes 0.1+gitAUTOINC+deadbeefdecafbad_decafbaddeadbeef
- if PV contains 'AUTOINC' set PKGV to the same thing with AUTOINC replaced
with the "auto PR" value
- if the PRServer isn't running replace AUTOINC with 0 (no package feeds, but usual
image creation would work)
- use the PR table with "AUTOINC-${PV-without-SRCREVs}" as key
- modify prexport/primport to address the generated srcrev entries
- this patch addresses the following proposal:
http://lists.linuxtogo.org/pipermail/bitbake-devel/2012-November/003878.html

(From OE-Core rev: b27b438221e16ac3df6ac66d761b77e3bd43db67)

Signed-off-by: Constantin Musca <constantinx.musca@intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/prexport.bbclass

@@ -24,6 +24,16 @@ python prexport_handler () {
             bb.warn("prexport_handler: No AUTOPR values found for %s" % ver)
             return
         oe.prservice.prserv_export_tofile(e.data, None, datainfo, False)
+        if 'AUTOINC' in ver:
+            import re
+            srcpv =  bb.fetch2.get_srcrev(e.data)
+            base_ver = "AUTOINC-%s" % ver[:ver.find(srcpv)]
+            e.data.setVar('PRSERV_DUMPOPT_VERSION', base_ver)
+            retval = oe.prservice.prserv_dump_db(e.data)
+            if not retval:
+                bb.fatal("prexport_handler: export failed!")
+            (metainfo, datainfo) = retval
+            oe.prservice.prserv_export_tofile(e.data, None, datainfo, False)
     elif isinstance(e, bb.event.ParseStarted):
         import bb.utils
         import oe.prservice