Fix confusable "label" usage, use "text" instead

* Rename makelabel tool to maketext
* Rename KeyboardLablesSet class to KeyboardTextsSet
* Rename "!label/name" to "!text/name"

Change-Id: Ia9494a89fe56f20ca8e8fedb253adbcf8b771bd3
diff --git a/tools/maketext/etc/manifest.txt b/tools/maketext/etc/manifest.txt
new file mode 100644
index 0000000..bfd1a52
--- /dev/null
+++ b/tools/maketext/etc/manifest.txt
@@ -0,0 +1 @@
+Main-Class: com.android.inputmethod.latin.maketext.LabelText