DBD::Pg Array and string optimization patch

Replace string operations with an efficient string concat library
Replace all linked lists with arrays
Use arrays to remove quadratic complexity algorithm.

Fix CPAN RT #105492

Author: mtyson01

MANIFEST

@@ -24,6 +24,8 @@ types.c
 types.h
 quote.c
 quote.h
+sstring.h
+sstring.c
 
 .perlcriticrc
 t/dbdpg_test_setup.pl

Makefile.PL

@@ -214,7 +214,7 @@ my %opts =
      NAME           => 'DBD::Pg',
      VERSION_FROM   => 'Pg.pm',
      INC            => "-I$POSTGRES_INCLUDE -I$dbi_arch_dir",
-     OBJECT         => "Pg\$(OBJ_EXT) dbdimp\$(OBJ_EXT) quote\$(OBJ_EXT) types\$(OBJ_EXT)",
+     OBJECT         => "Pg\$(OBJ_EXT) dbdimp\$(OBJ_EXT) quote\$(OBJ_EXT) types\$(OBJ_EXT) sstring\$(OBJ_EXT)",
      LIBS           => ["-L$POSTGRES_LIB -lpq -lm"],
      AUTHOR         => 'Greg Sabino Mullane',
      ABSTRACT       => 'PostgreSQL database driver for the DBI module',