Fix bug 172719 (cmake-options causes kdesvn-build to fail).

The root cause of the problem was that when you had more than one option on a single cmake-options
command that it was not getting split into a list properly.

The root cause of *that* error was that the regular expression I used to perform the split
(without splitting around double-quotes) failed with leading whitespace.  I didn't do testing for
that case but that it how the function ends up getting called in kdesvn-build.

In addition to the bug I've added quotes around individual command parameters for log_command() to
make future instances of this type of bug (improper splitting) more obvious.

BUG:172719

svn path=/trunk/KDE/kdesdk/scripts/kdesvn-build; revision=910294

kdesvn-build

@@ -847,7 +847,8 @@ sub split_quoted_on_whitespace($)
 {
     my $str = shift;
     my @words = $str =~
-      /"?      # Match 0-1 quotes
+      /\s*     # Eat up whitespace
+       "?      # Match 0-1 quotes
        (       # Open grouping expression
         (?<!") #   Match everything not following " (i.e. there was no quote)
         \S+    #   Followed by 1 or more non-whitespace (this breaks on whitespace)
@@ -2210,7 +2211,7 @@ sub log_command
 
     if (pretending)
     {
-        pretend "\tWould have run g[", join (' ', @command);
+        pretend "\tWould have run g['", join ("' '", @command), "'";
         return 0;
     }