templatekw: replace currentbookmark with activebookmark keyword

Today, the terms 'active' and 'current' are interchangeably used throughout the
codebase in reference to the active bookmark (the bookmark that will be updated
with the next commit). This leads to confusion among developers and users.
This patch is part of a series to standardize the usage to 'active' throughout
the mercurial codebase and user interface.

mercurial/help/config.txt

@@ -376,8 +376,8 b' one shown by default::'
         HG: --
         HG: user: {author}\n{ifeq(p2rev, "-1", "",
        "HG: branch merge\n")
-       }HG: branch '{branch}'\n{if(currentbookmark,
-       "HG: bookmark '{currentbookmark}'\n")  }{subrepos %
+       }HG: branch '{branch}'\n{if(activebookmark,
+       "HG: bookmark '{activebookmark}'\n")   }{subrepos %
        "HG: subrepo {subrepo}\n"              }{file_adds %
        "HG: added {file}\n"                   }{file_mods %
        "HG: changed {file}\n"                 }{file_dels %

tests/test-command-template.t

@@ -3090,12 +3090,12 b' Test current bookmark templating'
   2 bar* foo 
   1 
   0 
-  $ hg log --template "{rev} {currentbookmark}\n"
+  $ hg log --template "{rev} {activebookmark}\n"
   2 bar
   1 
   0 
   $ hg bookmarks --inactive bar
-  $ hg log --template "{rev} {currentbookmark}\n"
+  $ hg log --template "{rev} {activebookmark}\n"
   2 
   1 
   0 

tests/test-commit.t

@@ -302,7 +302,7 b' test commit message content'
   $ cd commitmsg
   $ echo changed > changed
   $ echo removed > removed
-  $ hg book currentbookmark
+  $ hg book activebookmark
   $ hg ci -qAm init
 
   $ hg rm removed
@@ -317,7 +317,7 b' test commit message content'
   HG: --
   HG: user: test
   HG: branch 'default'
-  HG: bookmark 'currentbookmark'
+  HG: bookmark 'activebookmark'
   HG: added added
   HG: changed changed
   HG: removed removed
@@ -354,7 +354,7 b' test saving last-message.txt'
   HG: --
   HG: user: test
   HG: branch 'default'
-  HG: bookmark 'currentbookmark'
+  HG: bookmark 'activebookmark'
   HG: subrepo sub
   HG: added .hgsub
   HG: added added
@@ -376,22 +376,22 b' specific template keywords work well'
   > [committemplate]
   > changeset.commit.normal = HG: this is "commit.normal" template
   >     HG: {extramsg}
-  >     {if(currentbookmark,
-  >    "HG: bookmark '{currentbookmark}' is activated\n",
+  >     {if(activebookmark,
+  >    "HG: bookmark '{activebookmark}' is activated\n",
   >    "HG: no bookmark is activated\n")}{subrepos %
   >    "HG: subrepo '{subrepo}' is changed\n"}
   > 
   > changeset.commit = HG: this is "commit" template
   >     HG: {extramsg}
-  >     {if(currentbookmark,
-  >    "HG: bookmark '{currentbookmark}' is activated\n",
+  >     {if(activebookmark,
+  >    "HG: bookmark '{activebookmark}' is activated\n",
   >    "HG: no bookmark is activated\n")}{subrepos %
   >    "HG: subrepo '{subrepo}' is changed\n"}
   > 
   > changeset = HG: this is customized commit template
   >     HG: {extramsg}
-  >     {if(currentbookmark,
-  >    "HG: bookmark '{currentbookmark}' is activated\n",
+  >     {if(activebookmark,
+  >    "HG: bookmark '{activebookmark}' is activated\n",
   >    "HG: no bookmark is activated\n")}{subrepos %
   >    "HG: subrepo '{subrepo}' is changed\n"}
   > EOF
@@ -404,7 +404,7 b' specific template keywords work well'
   $ HGEDITOR=cat hg commit -S -q
   HG: this is "commit.normal" template
   HG: Leave message empty to abort commit.
-  HG: bookmark 'currentbookmark' is activated
+  HG: bookmark 'activebookmark' is activated
   HG: subrepo 'sub' is changed
   HG: subrepo 'sub2' is changed
   abort: empty commit message
@@ -416,7 +416,7 b' specific template keywords work well'
   > # now, "changeset.commit" should be chosen for "hg commit"
   > EOF
 
-  $ hg bookmark --inactive currentbookmark
+  $ hg bookmark --inactive activebookmark
   $ hg forget .hgsub
   $ HGEDITOR=cat hg commit -q
   HG: this is "commit" template