ICU 56 step 4: Apply post-56 fixes for measure/date format

patches/pkg_gen.patch

-diff --git a/source/tools/toolutil/pkg_genc.c b/source/tools/toolutil/pkg_genc.c
-index e211403..ddc6941 100644
---- a/source/tools/toolutil/pkg_genc.c
-+++ b/source/tools/toolutil/pkg_genc.c
-@@ -119,7 +119,11 @@ static const struct AssemblyType {
-         ".globl %s\n"
-         "\t.section .note.GNU-stack,\"\",%%progbits\n"
-         "\t.section .rodata\n"
--        "\t.balign 16\n" 
-+        "\t.balign 16\n"
-+        /* The 3 lines below are added for Chrome. */
-+        "#ifdef U_HIDE_DATA_SYMBOL\n"
-+        "\t.hidden %s\n"
-+        "#endif\n"
-         "\t.type %s,%%object\n"
-         "%s:\n\n",
- 
-@@ -129,6 +133,10 @@ static const struct AssemblyType {
-         /*"\t.section __TEXT,__text,regular,pure_instructions\n"
-         "\t.section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32\n"*/
-         ".globl _%s\n"
-+        /* The 3 lines below are added for Chrome. */
-+        "#ifdef U_HIDE_DATA_SYMBOL\n"
-+        "\t.private_extern _%s\n"
-+        "#endif\n"
-         "\t.data\n"
-         "\t.const\n"
-         "\t.balign 16\n"
-@@ -264,7 +272,7 @@ writeAssemblyCode(const char *filename, const char *destdir, const char *optEntr
-         exit(U_FILE_ACCESS_ERROR);
-     }
- 
--    getOutFilename(filename, destdir, bufferStr, entry, ".s", optFilename);
-+    getOutFilename(filename, destdir, bufferStr, entry, ".S", optFilename);
-     out=T_FileStream_open(bufferStr, "w");
-     if(out==NULL) {
-         fprintf(stderr, "genccode: unable to open output file %s\n", bufferStr);