BUG=none TEST=emerge-x86-generic -1v ecryptfs-utils use pkg-config instead of nss-config/nspr-config. nss-config/nspr-config doesn't handle SYSROOT or PKG_CONFIG_SYSROOT_DIR correctly. Change-Id: Ib0fba4356bba9aaf669071e658e6ce0caf53baef Review URL: http://codereview.chromium.org/3152035