Drop unnecessary executable bits from files.

diff --git a/README.md b/README.md
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/librarian/mobi.py b/librarian/mobi.py
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/librarian/mobi/style.css b/librarian/mobi/style.css
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/librarian/xslt/book2html.xslt b/librarian/xslt/book2html.xslt
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/librarian/xslt/book2txt.xslt b/librarian/xslt/book2txt.xslt
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/librarian/xslt/config.xml b/librarian/xslt/config.xml
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/librarian/xslt/normalize.xslt b/librarian/xslt/normalize.xslt
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/librarian/xslt/wl2html_base.xslt b/librarian/xslt/wl2html_base.xslt
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/librarian/xslt/wl2html_full.xslt b/librarian/xslt/wl2html_full.xslt
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/librarian/xslt/wl2html_partial.xslt b/librarian/xslt/wl2html_partial.xslt
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/scripts/master.css b/scripts/master.css
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/scripts/master.plain.css b/scripts/master.plain.css
old mode 100755 (executable)
new mode 100644 (file)