Rename "Multitouch" directory to "multitouch"

This is a top-level directory used for categorization. Other
categories are using lower-case names, so doing the same here
for consistency.

Change-Id: Ie2e088ec31d2cad66d60b4114960088c5d712ac5
18 files changed
tree: 3698ae5040639b2bbf0b79f9aa2e1da61315e47d
  1. .gitignore
  2. common/
  3. content/
  4. input/
  5. media/
  6. networking/
  7. security/
  8. testing/
  9. ui/