subrepo: ensure "close()" execution at the end of "_initrepo()" Before this patch, "close()" for the file object opened in "_initrepo()" may not be executed, if unexpected exception is raised, because it isn't executed in "finally" clause. This patch ensures "close()" execution at the end of "_initrepo()" by moving it into "finally" clause. This patch puts configuration lines into "lines" array and write them out at once, to narrow the scope of "try"/"finally" for review-ability. This patch doesn't use "vfs.write()", because: - current "vfs.write()" implementation doesn't take "mode" argument to open file in "text" mode - writing hgrc file out in binary mode may break backward compatibility

subrepo: add test whether "[paths]" is configured correctly at subrepo creation This test is added for changes in the subsequent patch. This test doesn't use "(glob)" for expected output, because "[paths]" is configured at subrepo creation by "_abssource()" using "posixpath.join()" to join path components.

subrepo: ensure "close()" execution at the end of "_cachestorehash()" Before this patch, "close()" for the file object opened in "_cachestorehash()" may not be executed, if unexpected exception is raised, because it isn't executed in "finally" clause. This patch ensures "close()" execution at the end of "_cachestorehash()" by moving it into "finally" clause.

subrepo: ensure "close()" execution at the end of "_readstorehashcache()" Before this patch, "close()" for the file object opened in "_readstorehashcache()" may not be executed, if unexpected exception is raised, because it isn't executed in "finally" clause. This patch ensures "close()" execution at the end of "_readstorehashcache()" by moving it into "finally" clause.

subrepo: ensure "close()" execution at the end of "_calcfilehash()" Before this patch, "close()" for the file object opened in "_calcfilehash()" may not be executed, if unexpected exception is raised, because it isn't executed in "finally" clause. This patch ensures "close()" execution at the end of "_calcfilehash()" by moving it into "finally" clause.

subrepo: ensure "lock.release()" execution at the end of "_cachestorehash()" Before this patch, "lock.release()" for "self._repo" in "_cachestorehash()" of "hgsubrepo" may not be executed, if unexpected exception is raised, because it isn't executed in "finally" clause. This patch ensures "lock.release()" execution at the end of "_cachestorehash()" by moving it into "finally" clause.