Rename binary: shellfu-embed to sfembed

Mostly for consistency with the other two binaries.

mkit.ini

 
 [files]
     bin      = src/bin/sfdoc
-    bin      = src/bin/shellfu-embed
+    bin      = src/bin/sfembed
     bin      = src/bin/sfpath
     doc      = LICENSE.md
     doc      = README.md

packaging/debian/shellfu-devel.install

 /etc/bash_completion.d/shellfu-devel.bash
 /usr/bin/sfdoc
-/usr/bin/shellfu-embed
+/usr/bin/sfembed

packaging/template.spec

 %files devel
 %config %{_sysconfdir}/bash_completion.d/shellfu-devel.bash
 %{_bindir}/sfdoc
-%{_bindir}/shellfu-embed
+%{_bindir}/sfembed
 
 %files sh
 %dir %{_datadir}/%{name}/include-sh

src/bin/shellfu-embed → src/bin/sfembed

 #!/bin/bash
 
-. "$(shellfu-get path)" || exit 3
+. "$(sfpath)" || exit 3
 
 shellfu import pretty
 
     echo "# shellfu version: $SHELLFU_VERSION"
     echo "#"
     echo
-    echo "# neuter any shellfu and shellfu-get calls"
+    echo "# neuter any shellfu and sfpath calls"
     echo "shellfu() { :; }"
-    echo "shellfu-get() { echo /dev/null; }"
-    #FIXME: this still assumes that shellfu-get and shellfu are
+    echo "sfpath() { echo /dev/null; }"
+    #FIXME: this still assumes that sfet and shellfu are
     #       not installed and needed in the script; ie. beats
     #       the use case when embedding is done to avoid
     #       conflict