backout the r945: the nginx.pm could not be loaded at all,
next try to fix --with-perl_modules_path= for unpriviliged user installation

auto/lib/perl/make

diff --git a/auto/lib/perl/make b/auto/lib/perl/make
index ad850c1..aa54ab8 100644
--- a/auto/lib/perl/make
+++ b/auto/lib/perl/make
@@ -30,6 +30,7 @@
 			NGX_PCRE=$PCRE					\
 			NGX_OBJS=$NGX_OBJS				\
 		$NGX_PERL Makefile.PL					\
-			PREFIX=$NGX_PERL_MODULES
+			LIB=$NGX_PERL_MODULES				\
+			INSTALLSITEMAN3DIR=$NGX_PERL_MODULES/man3
 
 END