Issue with FirstBufMappingLock

[darkixion]

I can't build this extension against current master:

thom@swift ~/Development/postgresql/contrib/pg_hibernate $ make install
gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -fpic -I. -I. -I../../src/include -D_GNU_SOURCE   -c -o pg_hibernate.o pg_hibernate.c -MMD -MP -MF .deps/pg_hibernate.Po
pg_hibernate.c: In function ‘SaveBuffers’:
pg_hibernate.c:662:17: error: ‘FirstBufMappingLock’ undeclared (first use in this function)
pg_hibernate.c:662:17: note: each undeclared identifier is reported only once for each function it appears in
make: *** [pg_hibernate.o] Error 1

[gurjeet]

This extension was developed against 9.3, and hasn't yet been ported to PG 9.4 (master), yet. I am aware of this problem, and explicitly made a decision to use PG 9.3 as the base version.

[gurjeet]

I have updated the code to be compatible with Postgres 9.4 an 9.3 at the same time.

Also note that the project name has changed to pg_hibernator, and the repository has also been renamed in Github.