Fix wrong default for filmstrip height
(cherry picked from commit ccc42d2b0579dfdc8dd38e8a0d33d7c790f67077)
Fix crash in calculator on malformed input
(cherry picked from commit d0da8962aab0489b1870f76856d3d1ca62f91e2a)
Prevent overflow when parsing numbers

at least make it happen with much bigger numbers only.
(cherry picked from commit ce7c7da7500ecbefb5090f262329ed9e9f220c23)
imageio: don't accidentally use libraw
(cherry picked from commit 5b2ac2b25c0b2aeba965536a073a3a42ad688078)