git.postgresql.org vs. REL8_1_STABLE

Am I the only one having problems building 8.1 from git? (Am I the only one
building 8.1 from git?) In a clean repository, I've checked out REL8_1_STABLE,
configured with only one argument, to set --prefix, and make gives me this:

make[4]: Entering directory
`/home/josh/devel/pgsrc/pg81/src/backend/access/common'
gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Winline
-Wdeclaration-after-statement -Wendif-labels -fno-strict-aliasing -fwrapv
-I../../../../src/include -D_GNU_SOURCE   -c -o indexvalid.o indexvalid.c
In file included from ../../../../src/include/executor/execdesc.h:19,                from
../../../../src/include/executor/executor.h:17,               from ../../../../src/include/executor/execdebug.h:17,
          from indexvalid.c:19: 
../../../../src/include/nodes/execnodes.h:23:29: error: nodes/tidbitmap.h: No
such file or directory
In file included from ../../../../src/include/executor/execdesc.h:19,                from
../../../../src/include/executor/executor.h:17,               from ../../../../src/include/executor/execdebug.h:17,
          from indexvalid.c:19: 
../../../../src/include/nodes/execnodes.h:934: error: expected
specifier-qualifier-list before ‘TIDBitmap’
../../../../src/include/nodes/execnodes.h:959: error: expected
specifier-qualifier-list before ‘TIDBitmap’
make[4]: *** [indexvalid.o] Error 1
make[4]: Leaving directory
`/home/josh/devel/pgsrc/pg81/src/backend/access/common'
make[3]: *** [common-recursive] Error 2
make[3]: Leaving directory `/home/josh/devel/pgsrc/pg81/src/backend/access'
make[2]: *** [access-recursive] Error 2
make[2]: Leaving directory `/home/josh/devel/pgsrc/pg81/src/backend'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/josh/devel/pgsrc/pg81/src'
make: *** [all] Error 2

Indeed, src/include/nodes has no tidbitmap.h file (it shows up in
REL8_2_STABLE).

--
Joshua Tolley / eggyknap
End Point Corporation
http://www.endpoint.com