Remove 'patch' link from tab, add to commit view

It's a bit confusing to enter the patch view from the tab, since it has no
layout. And the commit view has always lacked showing the commit id. Both of
these warts are fixed by this commit, which adds a new header line in the
commit view which shows the commit id as a 'permalink' to the current commit
and also adds a link to the patch view of the current commit.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

ui-commit.c

@@ -175,6 +175,12 @@ void cgit_print_commit(char *hex)
 	html("</td><td class='right'>");
 	cgit_print_date(info->committer_date, FMT_LONGDATE);
 	html("</td></tr>\n");
+	html("<tr><th>commit</th><td colspan='2' class='sha1'>");
+	tmp = sha1_to_hex(commit->object.sha1);
+	cgit_commit_link(tmp, NULL, NULL, ctx.qry.head, tmp);
+	html(" (");
+	cgit_patch_link("patch", NULL, NULL, NULL, tmp);
+	html(")</td></tr>\n");
 	html("<tr><th>tree</th><td colspan='2' class='sha1'>");
 	tmp = xstrdup(hex);
 	cgit_tree_link(sha1_to_hex(commit->tree->object.sha1), NULL, NULL,

ui-shared.c

@@ -541,8 +541,6 @@ void cgit_print_pageheader(struct cgit_context *ctx)
 				 ctx->qry.head, ctx->qry.sha1);
 		cgit_diff_link("diff", NULL, hc(cmd, "diff"), ctx->qry.head,
 			       ctx->qry.sha1, ctx->qry.sha2, NULL);
-		cgit_patch_link("patch", NULL, hc(cmd, "patch"), ctx->qry.head,
-				ctx->qry.sha1);
 		html("</td><td class='form'>");
 		html("<form class='right' method='get' action='");
 		if (ctx->cfg.virtual_root)

ui-shared.h

@@ -14,6 +14,8 @@ extern void cgit_log_link(char *name, char *title, char *class, char *head,
 			  char *pattern);
 extern void cgit_commit_link(char *name, char *title, char *class, char *head,
 			     char *rev);
+extern void cgit_patch_link(char *name, char *title, char *class, char *head,
+			    char *rev);
 extern void cgit_refs_link(char *name, char *title, char *class, char *head,
 			   char *rev, char *path);
 extern void cgit_snapshot_link(char *name, char *title, char *class,