remove unnecessary use of OUString::createFromAscii

Convert code like this:
    OUString aStrSpacing(OUString::createFromAscii("spacing"));
to:
    OUString aStrSpacing("spacing");

Change-Id: Ia2b7d6b42f35d33cfe587a0d6668030f3537fa6d
remove unnecessary RTL_CONSTASCII_STRINGPARAM in OUString::equalsL

Convert code like this:
    if (aStr.equalsL(RTL_CONSTASCII_STRINGPARAM("rem")))
to:
    if (aStr == "rem")
which compiles down to the same code.

Change-Id: I2dfa0f0a457c465948ecf720daaa45ff29d69de9