bam not finding python should be a critical error

[Dune-jr]

Compiling should halt after bam fails to execute Python commands, namely because they're not in PATH.

Someone in IRC was trying to debug that issue, and it apparently gives this sort of errors after failing to generate the C files:

ing ',' before '*'
c:\tws\src\game\client\components/items.h(26) : error C2061: syntax error : iden
tifier 'CNetObj_Projectile'
c:\tws\src\game\client\components/players.h(12) : error C4430: missing type spec
ifier - int assumed. Note: C++ does not support default-int
c:\tws\src\game\client\components/players.h(12) : error C2143: syntax error : mi
ssing ',' before '*'
c:\tws\src\game\client\components/players.h(19) : error C4430: missing type spec
ifier - int assumed. Note: C++ does not support default-int
c:\tws\src\game\client\components/players.h(19) : error C2143: syntax error : mi
ssing ',' before '*'
c:\tws\src\game\client\components/nameplates.h(10) : error C4430: missing type s
pecifier - int assumed. Note: C++ does not support default-int
c:\tws\src\game\client\components/nameplates.h(10) : error C2143: syntax error :
 missing ',' before '*'
src/game/client/gameclient.cpp(89) : error C2146: syntax error : missing ';' bef
ore identifier 'GAME_NETVERSION_HASH'
src/game/client/gameclient.cpp(89) : error C2065: 'GAME_NETVERSION_HASH' : undec
lared identifier
src/game/client/gameclient.cpp(90) : error C2065: 'm_NetObjHandler' : undeclared
 identifier
src/game/client/gameclient.cpp(90) : error C2228: left of '.GetObjName' must hav
e class/struct/union
        type is ''unknown-type''
src/game/client/gameclient.cpp(96) : error C2065: 'TEAM_RED' : undeclared identi
fier
src/game/client/gameclient.cpp(98) : error C2065: 'TEAM_BLUE' : undeclared ident
ifier
src/game/client/gameclient.cpp(126) : error C2065: 'NUM_GAMEMSGS' : undeclared i
dentifier
src/game/client/gameclient.cpp(128) : error C2078: too many initializers
src/game/client/gameclient.cpp(129) : fatal error C1903: unable to recover from
previous error(s); stopping compilation
bam: 'objs/game/client/gameclient.obj' error 2
[127/160] #1 c++ src/game/client/lineinput.cpp
[128/160] #1 c++ src/game/client/localization.cpp
[129/160] #1 c++ src/game/client/render.cpp
c:\tws\src\game\client\animstate.h(8) : error C2146: syntax error : missing ';'
before identifier 'm_Body'
c:\tws\src\game\client\animstate.h(8) : error C4430: missing type specifier - in
t assumed. Note: C++ does not support default-int
...