Replace "Checkout" by "Check out" when used as a verb

One occurrence in core JGit, several in jgit.pgm. One unused
occurrence in jgit.pgm; remove it.

Change-Id: I04c3dd9d9f542f1e1ac6df4cbf03bcefb6bfdf78
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>

org.eclipse.jgit.pgm/resources/org/eclipse/jgit/pgm/internal/CLIText.properties

@@ -24,7 +24,6 @@ branchNameRequired=branch name required
 branchNotFound=branch ''{0}'' not found.
 cacheTreePathInfo="{0}": {1} entries, {2} children
 cannotBeRenamed={0} cannot be renamed
-cannotChekoutNoHeadsAdvertisedByRemote=cannot checkout; no HEAD advertised by remote
 cannotCombineSquashWithNoff=You cannot combine --squash with --no-ff.
 cannotCreateCommand=Cannot create command {0}
 cannotCreateOutputStream=cannot create output stream
@@ -315,7 +314,7 @@ usage_blameSuppressAuthor=do not show author name and timestamp
 usage_beMoreVerbose=be more verbose
 usage_beVerbose=be verbose
 usage_cached=compare against index
-usage_checkout=Checkout a branch to the working tree
+usage_checkout=Check out a branch to the working tree
 usage_cloneRepositoryIntoNewDir=Clone a repository into a new directory
 usage_configFile=configuration file
 usage_configGlobal=use global configuration in ~/.gitconfig
@@ -323,7 +322,7 @@ usage_configList=List all variables set in config file
 usage_configLocal=use local configuration in .git/config
 usage_configSystem=use system-wide configuration in $(prefix)/etc/gitconfig
 usage_configureTheServiceInDaemonServicename=configure the service in daemon.servicename
-usage_createBranchAndCheckout=create branch and checkout
+usage_createBranchAndCheckout=create branch and check out
 usage_deleteBranchEvenIfNotMerged=delete branch (even if not merged)
 usage_deleteFullyMergedBranch=delete fully merged branch
 usage_date=date format, one of default, rfc, local, iso, short, raw (as defined by git-log(1) ), locale or localelocal (jgit extensions)
@@ -416,7 +415,7 @@ usage_untrackedFilesMode=show untracked files
 usage_updateRef=reference to update
 usage_updateRemoteRefsFromAnotherRepository=Update remote refs from another repository
 usage_useNameInsteadOfOriginToTrackUpstream=use <name> instead of 'origin' to track upstream
-usage_checkoutBranchAfterClone=checkout named branch instead of remote's HEAD
+usage_checkoutBranchAfterClone=check out named branch instead of remote's HEAD
 usage_viewCommitHistory=View commit history
 usage_orphan=Create a new orphan branch. The first commit made on this new branch will have no parents and it will be the root of a new history totally disconnected from other branches and commits.
 usernameFor=Username for {0}:

org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/internal/CLIText.java

@@ -138,7 +138,6 @@ public class CLIText extends TranslationBundle {
 	/***/ public String cacheTreePathInfo;
 	/***/ public String configFileNotFound;
 	/***/ public String cannotBeRenamed;
-	/***/ public String cannotChekoutNoHeadsAdvertisedByRemote;
 	/***/ public String cannotCombineSquashWithNoff;
 	/***/ public String cannotCreateCommand;
 	/***/ public String cannotCreateOutputStream;

org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties

@@ -54,7 +54,7 @@ cannotBeCombined=Cannot be combined.
 cannotBeRecursiveWhenTreesAreIncluded=TreeWalk shouldn't be recursive when tree objects are included.
 cannotChangeActionOnComment=Cannot change action on comment line in git-rebase-todo file, old action: {0}, new action: {1}.
 cannotChangeToComment=Cannot change a non-comment line to a comment line.
-cannotCheckoutFromUnbornBranch=Cannot checkout from unborn branch
+cannotCheckoutFromUnbornBranch=Cannot check out from unborn branch
 cannotCheckoutOursSwitchBranch=Checking out ours/theirs is only possible when checking out index, not when switching branches.
 cannotCombineSquashWithNoff=Cannot combine --squash with --no-ff.
 cannotCombineTreeFilterWithRevFilter=Cannot combine TreeFilter {0} with RevFilter {1}.