Applications crash observed while selecting words from suggestion list

While selecting words from suggestion list, applications are crashing as
textview span are going out of index. For textinput where spaces are not
allowed length difference shall be calculated properly to avoid Index
out of bound situations.

Change-Id: I360318cf9241abbb7f58ad1ddf3f3c8d364f17d1
CRs-Fixed: 642057

Conflicts:
	core/java/android/widget/Editor.java