Explicitly state which source level we are compiling.  Newer versions of gij/gcj run a 1.5 VM, but default to a 1.4 source level compile which tricks up our build system.  This still doens't fix the case of running with a newer VM than compiler, but I don't see what we can do about that.
Explicitly state which source level we are compiling.  Newer versions
of gij/gcj run a 1.5 VM, but default to a 1.4 source level compile
which tricks up our build system.  This still doens't fix the case of
running with a newer VM than compiler, but I don't see what we can
do about that.

Tom Lane + Oliver Jowett

lonnyj/pgjdbc,underyx/pgjdbc,thkoch2001/libpostgresql-jdbc-java,sehrope/pgjdbc,whitingjr/pgjdbc,jamesthomp/pgjdbc,amozhenin/pgjdbc,zapov/pgjdbc,Gordiychuk/pgjdbc,lordnelson/pgjdbc,panchenko/pgjdbc,golovnin/pgjdbc,jorsol/pgjdbc,lordnelson/pgjdbc,jamesthomp/pgjdbc,zapov/pgjdbc,alexismeneses/pgjdbc,zemian/pgjdbc,marschall/pgjdbc,ekoontz/pgjdbc,phillipross/pgjdbc,marschall/pgjdbc,davecramer/pgjdbc,jkutner/pgjdbc,jorsol/pgjdbc,amozhenin/pgjdbc,whitingjr/pgjdbc,lordnelson/pgjdbc,alexismeneses/pgjdbc,pgjdbc/pgjdbc,bocap/pgjdbc,Gordiychuk/pgjdbc,thkoch2001/libpostgresql-jdbc-java,marschall/pgjdbc,rjmac/pgjdbc,AlexElin/pgjdbc,golovnin/pgjdbc,phillipross/pgjdbc,panchenko/pgjdbc,davecramer/pgjdbc,AlexElin/pgjdbc,zemian/pgjdbc,whitingjr/pgjdbc,underyx/pgjdbc,schlosna/pgjdbc,sehrope/pgjdbc,davecramer/pgjdbc,jkutner/pgjdbc,bocap/pgjdbc,bocap/pgjdbc,AlexElin/pgjdbc,underyx/pgjdbc,jorsol/pgjdbc,marschall/pgjdbc,ekoontz/pgjdbc,panchenko/pgjdbc,sehrope/pgjdbc,tivv/pgjdbc,jkutner/pgjdbc,jorsol/pgjdbc,tivv/pgjdbc,rjmac/pgjdbc,amozhenin/pgjdbc,thkoch2001/libpostgresql-jdbc-java,schlosna/pgjdbc,pgjdbc/pgjdbc,phillipross/pgjdbc,rjmac/pgjdbc,jamesthomp/pgjdbc,davecramer/pgjdbc,pgjdbc/pgjdbc,zemian/pgjdbc,golovnin/pgjdbc,zapov/pgjdbc,lonnyj/pgjdbc,Gordiychuk/pgjdbc,pgjdbc/pgjdbc,sehrope/pgjdbc