legacy-support: update to v1.2.1

Also removes the now-unnecessary version holdback for OS 10.4.

Retains the -devel subport, since it's likely to be needed again in
the not-too-distant future.  At this time, the -devel and non-devel
versions are identical, but the -devel version is still referenced to
the commit ID rather than the version, for easier future editing.

Closes: https://trac.macports.org/ticket/68314

TESTED:
Tested both normal and -devel versions (currently identical) on
10.4-10.5 ppc, 10.5-10.6 ppc (x86_64 Rosetta), 10.4-10.6 i386,
10.4-12.x x86_64, and 11.x-14.x arm64.
Builds on all tested platforms except 10.5 ppc +universal.
Passes all -universal tests.
Buildable +universal cases pass all tests, except for expected
failures on 10.11-10.13 x86_64 +universal (i386).

devel/legacy-support/Portfile

@@ -22,9 +22,7 @@ long_description    {*}${description}
 epoch               1
 
 # Primary release version
-# NOTE: At present, v1.2.0 has a compatibility issue.
-# Do not update until this is resolved.
-set release_ver     1.1.1
+set release_ver     1.2.1
 
 # Binary compatibility version
 set compat_ver      1.0.0
@@ -33,19 +31,9 @@ subport ${name} {
     conflicts           ${name}-devel
     github.setup        macports macports-legacy-support ${release_ver} v
     revision            0
-    checksums           rmd160  e4b78b21c8bfd7fbb3aa8003da90932e83d53dc4 \
-                        sha256  cbd73bdd6261368a521c24f73fbd20e2f96ff3d49b3d1e1291a9de77e4914ba8 \
-                        size    72245
-
-    # Remove this once the above release_ver works on 10.4
-    if {${os.platform} eq "darwin" && ${os.major} < 9} {
-        set release_ver     1.0.13
-        github.setup        macports macports-legacy-support ${release_ver} v
-        revision            0
-        checksums           rmd160  1afccf82bccb721d31ed63c1dfddbb36436af004 \
-                        sha256  56dfbbca8b82f941856cdac38354b4fd504d4b7bed2c7b9b6b14a784cc59c6aa \
-                        size    65296
-    }
+    checksums           rmd160  e25e45cc5d747c6a710aa085ffbcfbaffb547935 \
+                        sha256  971ed22e77f1b3ab34eb3f306a9a792f5b2f912534976b6c3e261dcc8f9512e2 \
+                        size    72500
 }
 
 subport ${name}-devel {