added some file io routines

h2/lib/lib.gpr.in

@@ -2,7 +2,8 @@ project Lib is
 
 	for Source_Dirs use (
 		"@abs_srcdir@",
-		"@abs_srcdir@/posix"
+		"@abs_srcdir@/posix",
+		"@abs_builddir@/posix"
 	);
 	for Library_Name use "h2";
 	for Library_Kind use "dynamic";
@@ -12,9 +13,13 @@ project Lib is
 
 	for Source_Files use (
 		"h2.ads",
+		"h2-sysdef.ads",
 		"h2-ascii.ads",
 		"h2-pool.adb",
 		"h2-pool.ads",
+		"h2-io.ads",
+		"h2-io.adb",
+		"h2-io-file.adb",
 		"h2-scheme.adb",
 		"h2-scheme.ads",
 		"h2-scheme-bigint.adb",
@@ -34,10 +39,12 @@ project Lib is
 	for Library_Interface use (
 		"h2",
 		"h2.ascii",
+		"h2.io",
 		"h2.pool",
 		"h2.scheme",
 		"h2.slim",
 		"h2.sysapi",
+		"h2.sysdef",
 		"h2.utf8",
 		"h2.wide",
 		"h2.wide_wide"