Also, fixing misplaced viewwindow that was drawing the screen before the right tiles for that level were selected.
git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@4376 c06c8d41-db1a-0410-9941-cceddc491573
THCKJAEU267TTUIH6YUHSO2QUZFXYASECGWWHR673WITYO3ND4HAC
VXSORUQOM2VZA4CAZDC6KPAY373NQIN3UT7CXQXTRCYXO2WM62DAC
25CH7HH4LKXFIZ75YNMXS3TSXO6O27DYSOPLOD45K4OCNFWLS4LQC
CSRWDG2SUGS4YR4PAFI574EGEXW65P6JDT4ZHWDICS2G2GZIGEUQC
LJK4ZQATLSB4MKZG3ARZX5V6RFGTN3NLCN6GTCUGJQKU26SOXMUAC
K2CS6TCX2NDVL2ASEHGP4J4K4IJ6FP3ANNKTSIWVG43HPYSBX6ZQC
OYYZVCE3QHBVJM6IEKK5HTJRG5YOVQNCBRMSJENTHOI2WPJLNCFAC